The Enhanced Fujita Scale provides an estimated range of a tornado's wind speeds, based on the tornado's damage.

One question you may ask yourself is how tornadoes are measured? It's with the Enhanced Fujita (EF) scale which is gives a ...

Alabama’s PDS tornado watch is the second PDS watch of the day. Parts of Mississippi and Louisiana were put under a PDS watch ...

Researches found little evidence that tornadoes were getting weaker. Instead, it appears that a subjective tornado grading system is to blame.

Severe weather season usually begins to ramp up in March and lasts through the start of summer. The dramatic increase in sun ...

A dangerous tornado outbreak featuring the potential for "multiple violent" tornadoes threatens much of the Deep South ...

Windspeeds reached 85 mph for about two minutes as the tornado traversed about a mile just west of the 605 Freeway.

A quirky aspect of the way we measure twisters helps explain why there hasn't been a top-tier-rated tornado in 12 years.

Residents were stunned after a tornado touched down in Pico Rivera early Thursday morning, leaving behind a trail of destruction. At around 3:15 a.m., the tornado, an EF-0 on the Enhanced Fujita ...

An EF0 tornado touched down in Los Angeles County early Thursday morning, causing damage to a Pico Rivera neighborhood, the National Weather Service said.

MOLINE, Ill. — A new study published by the American Meteorological Society has shed light on a puzzling phenomenon: The United States has not logged an EF5 tornado, the most violent category ...